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A further note on two provenances of Dalbergia sissoo at Kibaha, Tanzania
| Publication Type | Journal Article |
| Year of Publication | 2004 |
| Authors | Mndolwa, M, A. |
| Journal Title | Newsletter - Tanzania Forestry Research Institute (TAFORI) |
| Volume | 4 |
| Pagination | 12-14 |
| ISBN Number | 0856-4965 |
| Key Words | diameter; growth; increment; plant height; provenance; survival; Dalbergia sissoo |
| Abstract | Two provenances of Dalbergia sissoo , high rainfall (1200 mm) provenance (Koshi Tappu) and low rainfall (700 mm) provenance (Dhamisha Nepal) were established at Kibaha at an spacement of 2.5 x 2.5 m. Trees received intensive maintenance to maximize growth and were assessed yearly to monitor survival and growth. Results from six-year-old trees indicated that high rainfall provenance had the highest survival of 96%, average height of 3.1 m, current annual increment (CAI) of 0.51 m and average diameter at breast height (DBH) of 3.75 cm. The low rainfall provenance had survival of 59%, average height of 2.3 m, CAI of 0.38 m and average DBH of 2.26 cm. In all six years the low rainfall provenance had the lowest CAI. In the sixth year, 34.5% of the high rainfall provenance had the average DBH above 5 cm compared to only 19% of low rainfall provenance. The high rainfall provenance started flowering in the third year. Planting high rainfall provenance along the coastal lowland is recommended along side with further testing of more provenances. |
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